QUEFTS Model-based Estimation of the Nutrient Requirements and Fertilizer Recommendation for Chinese Onion

文献类型： 外文期刊

第一作者： Wei, Jianlin

作者： Wei, Jianlin;Tan, Deshui;Li, Yan;Li, Guosheng;Cui, Rongzong;Li, Shutian;He, Ping;Xu, Xinpeng;Guo, Yuesheng

作者机构：

关键词： Chinese onion; NPK requirement; QUEFTS model; yield response; agronomic efficiency

期刊名称：HORTSCIENCE （ 影响因子：1.874； 五年影响因子：1.921 ）

ISSN： 0018-5345

年卷期： 2022 年 57 卷 2 期

页码：

收录情况： SCI

摘要： Accurate estimation of the nutrient requirements of Chinese onion is essential to increase its nutrient utilization efficiency and yield. In this study, the yield and nutrient uptake data were collected from major Chinese onion growing regions during 2001 to 2018, and the relationship between Chinese onion yield and nutrient uptake was evaluated using the Quantitative Evaluation of the Fertility of Tropical Soils (QUEFTS) model. The QUEFTS model predicted the linear-parabolic platform curve of the balanced nutrient uptake of Chinese onion and estimated the demand of nitrogen (N), phosphorus (P), and potassium (K) for the potential target yields ranging from 40 t/ha to 120 t/ha. The nutrients required for the target yield increased linearly before reaching 60% to 70% of the potential yield. Nutrient requirements for producing 1 t of Chinese onion were 1.91 kg N-0.28 kg P-1.71 kg K. The corresponding nutrient internal efficiency (IE, yield per unit nutrient uptake) was 524.6 kg/kg, 3585.7 kg/kg, and 584.3 kg/kg for N, P and K, respectively. Subsequently, a nutrition decision-making software, Nutrient Expert (NE), for the Chinese onion was developed based on the improved QUEFTS model. Field verification studies for NE fertilizer recommendation were conducted in multiple Chinese onion growing plots for 2 consecutive years. Results showed that the QUEFTS model can be used to accurately estimate the nutrient requirements for Chinese onion within a defined range of target yield.

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